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Stenbrånet är ett område strax väster om Bastuträsk i utkanten av gruvdistriktet Skelleftefältet i Västerbotten, norra Sverige. Tidigare undersökningar gjorda av Boliden Mineral AB har visat på förekomst av en skivformad kropp kraftigt anrikad på Zn, Ag och Pb. Studier av tunnslip och borrkärnor som karterats i detta arbete visar på en decimeter- till metertjock sulfidhorisont med kraftig impregnaStenbrånet i situated west of Bastuträsk at the margin of the Skellefte mining district in Västerbotten, northern Sweden. Previous investigations carried out by Boliden Mineral AB reveal a disc-shaped orebody highly enriched in Zn, Ag and Pb. Studies of thin sections and mapping of drill cores verify the existence of a dm- to mthick sulphide horizon with a high impregnation of sphalerite and/or py

This research paper investigates the technical feasibility, system requirements, performance characteristics, and potential for optimization of an industrial heat pump in a district heating system, using the Modelon Impact platform. The study aims to provide a comprehensive understanding of the benefits and limitations of using cloud-based simulation platforms for the design and analysis of indust

At the core of the sustainable solid waste management challenge lies increasing rates of consumption which contribute directly to problems of resource extraction and degradation. Recycling is a tool designed in part to address this problem of scarcity, however on its own it is not enough to solve the problem, particularly in relation to plastics, which are challenging to manage and often are not r

Siemens Industrial Turbomachinery has developed dynamic gas turbine models to compute performance parameters such as temperature, pressure, mass flow and power during transients. Results from the current dynamic model correspond to measured data except for gas channel temperatures that change too fast during transients. The measurement of gas channel temperature is also a source of error due to th

The construction and industrial sector are one of the most climate-affecting industries, regarding greenhouse gas emissions. In 2018 this sector contributed to more than a fifth of the total greenhouse gas emissions in Sweden. The same sector generates approximately one third of the total amount of waste. The government aimed to recycle or reuse 70 percent of non-hazardous materials by 2020. In re

Additiv tillverkning, eller 3D-printing, är på grund av sina många fördelar en ständigt ökande tillverkningsmetod. Designfriheten, det reducerade materialspillet, förkortad tid från ritning till färdig produkt och förmågan att kunna printa rörliga delar gör 3D-printing intressant för många olika användningsområden. Ett användningsområde där relativt lite forskning gjorts men som har ett ökat intre

Detta project utfördes i samarbete med svenska förpackningsföretaget Tetra Pak Packaging Solutions AB. Deras huvuduppgift är att utveckla förpacknngsmaterial, processer och maskinlinjer som krävs för att producera laminatet, vilket är att flerskiktsmaterial som vanligtvis består av papper, plast och aluminium för att skapa en stark och skyddande barriär för flytande livsmedel. För att skapa laminaThis project was carried out in cooperation with Swedish packaging company Tetra Pak Packaging Solutions AB. Their main purpose is to develop the packaging material, process, and machine lines needed to produce the laminate, which is a multi-layered material typically made by combining paper, plastic, and aluminum to create a strong, protective barrier for liquid food packaging. In order to create

Infective endocarditis (IE) is a severe disease affecting the inner lining of the heart. Its diverse symptoms complicate diagnosis and the current main diagnostic tool is the Duke criteria which classifies suspected cases as definite, possible or rejected IE. A substantial portion of cases falls into the ambiguous “possible” category and there is a need for a more precise diagnostic system. This t

The aftermath of breast cancer treatment, especially the sexual side effects, appears to be a neglected issue in developed society. The purpose of this study was to explore how middle-aged women treated for a breast cancer experienced their sexual identity connected to the community norms and values in the society as a whole. Three focus group interviews were conducted, with a total of 12 women. T

The information market is constantly changing. With new and improved information technology more people get access to more information faster. However, the number of people educated to handle information also increases. Business intelligence has for a long time been a well-known tool for companies to be competitive. Because of the increased access to information the competition between companies h

This master’s thesis is about digital history and digital documents, studying attitudes and practises concerning this in some non-profit organizations. The study centres on how creators of archives handle their digital presence and on what they think about their digital material as part of their future history. The study has two main theoretical starting points: one in document theory, centring

In this paper, we perform a belief propagation (BP) decoding threshold analysis of spatially coupled (SC) turbo-like codes (TCs) (SC-TCs) on the additive white Gaussian noise (AWGN) channel. We review Monte-Carlo density evolution (MC-DE) and efficient prediction methods, which determine the BP thresholds of SC-TCs over the AWGN channel. We demonstrate that instead of performing time-consuming MC-

Background: Sepsis, the life-threatening organ dysfunction due to dysregulated host response to an infection, is a medical emergency. Early diagnosis and treatment are important factors to prevent mortality and morbidity. However, sepsis can be diffuse and difficult to interpret. Therefore, it is important to define models for early identification applicable in the Emergency Department (ED), in or